The apartment is elegant and comfortable for an enjoyable stay in Oslo. It is ideally located near two supermarkets, bus and tram stops, and the main train station and city (which is a 20 minute walk away). We would highly recommend this apartment. The only negative is that we couldn't find enough pans for cooking with.
Charming is right, as well as comfortable and well situated, great for exploring Grunerlokka. Also close enough to central Oslo to go see places on foot or by bus and tram. The owner is very helpful and welcoming.